CN202852189U - Rubber cover for valve - Google Patents
Rubber cover for valve Download PDFInfo
- Publication number
- CN202852189U CN202852189U CN201220438097.0U CN201220438097U CN202852189U CN 202852189 U CN202852189 U CN 202852189U CN 201220438097 U CN201220438097 U CN 201220438097U CN 202852189 U CN202852189 U CN 202852189U
- Authority
- CN
- China
- Prior art keywords
- valve
- gum cover
- rubber cover
- inner circumference
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to the technical field of valve manufacturing, in particular to a rubber cover for a valve. The rubber cover is circular-shaped, and two equal-spaced supporting tables used for supporting a supporting valve board are arranged on the inner circumference of the rubber cover. Centering positions of the two supporting tables are respectively provided with a shaft hole used for being connected with a rotary shaft of the valve board. The rubber cover for the valve is simple in structure, solid and durable. Due to the fact that a seal strip is respectively arranged on the inner circumference and the outer circumference of the rubber cover, the sealing effects between the rubber cover and the valve seat and between the valve board and the valve seat are improved. When the valve is used for connecting two pipelines, a water line is capable of helping the valve to be connected with a pipe orifice in a sealing mode, and the rubber cover for the valve further improves the sealing effect of the valve.
Description
Technical field
The utility model relates to technical field of valve manufacturing, relates in particular to a kind of valve gum cover.
Background technique
Valve is the controlling component in the fluid delivery system, and the sealing of valve is the most important technical performance index of valve.In general, there are three places at the sealing position of valve: the contacting point between open-shut device and valve seat two sealing surfaces; The cooperation place of filler and valve rod and stuffing box; The joint of valve body and valve gap.Wherein the leakage at last place is called interior leakage, usually said fitting badly namely, and it will affect the ability that valve blocks medium.For the block valve class, interior leakage is unallowed.The leakage at rear two places is called and leaks outside, namely medium from the valve internal leakage outside valve.Leak outside and can cause loss of material, befouling environment also can cause the accident when serious.For inflammable and explosive, poisonous or the medium of radiation is arranged, leak outside unallowable especially, thereby valve must have reliable sealability.
At present, the sealing condition of the sealing surface of seat of valve plays vital effect to valve, valve plate long-time repeatedly carry out opening and closing after, between valve plate and the valve seat just the slit can appear because wear and tear, even aging, fracture, so that the life of valve reduction, if therefore changing valve can bring larger economic burden.
In addition, the both sides of valve generally also need connecting tube, and valve and pipeline generally adopt metal to make, and generally connect by flange between the two, so just the sealing between the pipeline have been brought uncertainty; Because the sealing that is connected between metal and the metal is relatively poor, add that long flow of fluid can bring hydraulic pressure and corrosion to pipeline, sealing effect reduces.
The model utility content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and the gum cover that provides a kind of valve to use is with the sealing effect of raising valve and the working life of valve.
The utility model for achieving the above object, by the following technical solutions: a kind of valve arranges two equally spaced support platforms for supporting valve plate with gum cover in the form of a ring on the inner circumference; An axis hole that is used for connecting the valve plate rotating shaft is respectively offered in the central position of described two support platforms.
Above-mentioned valve is provided with the inner seal band of a circle projection with the inner circumference of gum cover.
Above-mentioned valve is with the external sealed band that is provided with a circle projection outer shroud week of gum cover.
Above-mentioned valve with the arranged outside of gum cover have at least one with the waterline of ring-type gum cover concentric.
The beneficial effects of the utility model are: the utility model is simple in structure, is easy to produce, and assembles by gum cover between valve plate and the valve seat, has prolonged the working life of valve, and good seal performance, and is durable; A sealing strip respectively is set in the inside and outside ring week of gum cover can better promotes sealing effect between gum cover and valve plate and the valve seat; When valve connected two pipelines, waterline can help valve better and the mouth of pipe is connected and sealed, and has further promoted the sealing effect of valve.
Description of drawings
Fig. 1 is the plan view of the utility model structure;
Fig. 2 is the sectional view along A-A direction among Fig. 1;
Fig. 3 is the sectional view along B-B direction among Fig. 1.
Wherein: the 1st, gum cover, the 2nd, inner seal band, the 3rd, waterline, the 4th, support platform, the 5th, axis hole, the 6th, external sealed band.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment.Such as Fig. 1, Fig. 2 and shown in Figure 3, a kind of valve arranges in the form of a ring with gum cover 1, is assemblied on the inner circumference of valve seat, and valve plate is connected with valve seat by gum cover 1; Two equally spaced horizontally disposed support platforms 4 that are for supporting valve plate are set on the inner circumference of gum cover 1; Valve shaft to two ends the structure in mating connection with gum cover 1 support platform 4 also is set; An axis hole 5 that is used for connecting the valve plate rotating shaft is respectively offered in the central position of described two support platforms 4, and the axis hole 5 that gum cover 1 is passed in the rotating shaft of valve plate inserts valve seat inside.
Above-mentioned valve is provided with the inner seal band 2 of a circle projection with the inner circumference of gum cover 1.
Above-mentioned valve is with the external sealed band 6 that is provided with a circle projection outer shroud week of gum cover 1.
Above-mentioned valve has 2 waterlines 3 with ring-type gum cover 1 concentric with the arranged outside of gum cover 1.
The utility model is simple in structure, assembles by gum cover 1 between valve plate and the valve seat, has prolonged the working life of valve, and good seal performance, and is durable; A sealing strip respectively is set in the inside and outside ring week of gum cover 1 can better promotes sealing effect between gum cover 1 and valve plate and the valve seat; When valve connected two pipelines, waterline 3 can help valve better and the mouth of pipe is connected and sealed, and has further promoted the sealing effect of valve.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a valve gum cover is characterized in that described gum cover in the form of a ring, and two equally spaced support platforms for supporting valve plate are set on the inner circumference; An axis hole that is used for connecting the valve plate rotating shaft is respectively offered in the central position of described two support platforms.
2. a kind of valve gum cover according to claim 1 is characterized in that described valve is provided with the inner seal band of a circle projection with the inner circumference of gum cover.
3. a kind of valve gum cover according to claim 1 is characterized in that described valve is with the external sealed band that is provided with a circle projection outer shroud week of gum cover.
4. a kind of valve gum cover according to claim 1, it is characterized in that described valve with the arranged outside of gum cover have at least one with the waterline of ring-type gum cover concentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220438097.0U CN202852189U (en) | 2012-08-30 | 2012-08-30 | Rubber cover for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220438097.0U CN202852189U (en) | 2012-08-30 | 2012-08-30 | Rubber cover for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202852189U true CN202852189U (en) | 2013-04-03 |
Family
ID=47983394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220438097.0U Expired - Lifetime CN202852189U (en) | 2012-08-30 | 2012-08-30 | Rubber cover for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202852189U (en) |
-
2012
- 2012-08-30 CN CN201220438097.0U patent/CN202852189U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |